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Note 3 - Loans Receivable and Allowance for Credit Losses on Loans - Schedule of Past Due Loans (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | $ 2,494,929 | $ 2,433,015
Financing Receivable, Nonaccrual | [1] | 10,772 | 10,952
Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 1,550,490 | 1,530,381
Financing Receivable, Nonaccrual | [1] | 6,189 | 6,056
Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 352,933 | 366,328
Financing Receivable, Nonaccrual |  | 1,130 | 1,088
Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 292,366 | 303,054
Financing Receivable, Nonaccrual | [1] | 4,737 | 4,699
Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 75,063 | 69,488
Financing Receivable, Nonaccrual | [1] | 156 | 173
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 591,666 | 567,742
Financing Receivable, Nonaccrual | [1] | 166 | 96
Real Estate Portfolio Segment [Member] | Multifamily [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 238,462 | 223,769
Financing Receivable, Nonaccrual | [1] | 0 | 0
Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 632,417 | 646,753
Financing Receivable, Nonaccrual | [1] | 2,008 | 2,213
Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 552,226 | 569,903
Financing Receivable, Nonaccrual | [1] | 1,770 | 1,863
Consumer Portfolio Segment [Member] | Marine Loans [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 76,845 | 73,310
Financing Receivable, Nonaccrual | [1] | 233 | 342
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 3,346 | 3,540
Financing Receivable, Nonaccrual | [1] | 5 | 8
Commercial Business Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 312,022 | 255,881
Financing Receivable, Nonaccrual | [1] | 2,575 | 2,683
Commercial Business Portfolio Segment [Member] | Commercial And Industrial [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 296,773 | 238,301
Financing Receivable, Nonaccrual | [1] | 2,575 | 2,683
Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 15,249 | 17,580
Financing Receivable, Nonaccrual | [1] | 0 | 0
Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 2,365 | 2,268
Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 173 | 79
Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 173 | 79
Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Multifamily [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 2,192 | 2,189
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 2,074 | 1,759
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Marine Loans [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 113 | 373
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 5 | 57
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] | Commercial And Industrial [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 2,178 | 1,630
Financial Asset, 60 to 89 Days Past Due [Member] | Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 794 | 121
Financial Asset, 60 to 89 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 25
Financial Asset, 60 to 89 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 794 | 96
Financial Asset, 60 to 89 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Multifamily [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 1,184 | 1,509
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 1,051 | 1,248
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Marine Loans [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 130 | 243
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 3 | 18
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 200 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] | Commercial And Industrial [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 200 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 7,455 | 3,570
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 4,894 | 136
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 4,737 | 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 156 | 136
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 1 | 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Multifamily [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 860 | 920
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 718 | 777
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Marine Loans [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 142 | 137
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 6
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 1,701 | 2,514
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] | Commercial And Industrial [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 1,701 | 2,514
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, Past Due [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 11,998 | 7,468
Financial Asset, Past Due [Member] | Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 5,861 | 336
Financial Asset, Past Due [Member] | Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, Past Due [Member] | Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 4,737 | 0
Financial Asset, Past Due [Member] | Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 329 | 240
Financial Asset, Past Due [Member] | Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 795 | 96
Financial Asset, Past Due [Member] | Real Estate Portfolio Segment [Member] | Multifamily [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, Past Due [Member] | Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 4,236 | 4,618
Financial Asset, Past Due [Member] | Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 3,843 | 3,784
Financial Asset, Past Due [Member] | Consumer Portfolio Segment [Member] | Marine Loans [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 385 | 753
Financial Asset, Past Due [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 8 | 81
Financial Asset, Past Due [Member] | Commercial Business Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 1,901 | 2,514
Financial Asset, Past Due [Member] | Commercial Business Portfolio Segment [Member] | Commercial And Industrial [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 1,901 | 2,514
Financial Asset, Past Due [Member] | Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, Not Past Due [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 2,482,931 | 2,425,547
Financial Asset, Not Past Due [Member] | Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 1,544,629 | 1,530,045
Financial Asset, Not Past Due [Member] | Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 352,933 | 366,328
Financial Asset, Not Past Due [Member] | Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 287,629 | 303,054
Financial Asset, Not Past Due [Member] | Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 74,734 | 69,248
Financial Asset, Not Past Due [Member] | Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 590,871 | 567,646
Financial Asset, Not Past Due [Member] | Real Estate Portfolio Segment [Member] | Multifamily [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 238,462 | 223,769
Financial Asset, Not Past Due [Member] | Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 628,181 | 642,135
Financial Asset, Not Past Due [Member] | Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 548,383 | 566,119
Financial Asset, Not Past Due [Member] | Consumer Portfolio Segment [Member] | Marine Loans [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 76,460 | 72,557
Financial Asset, Not Past Due [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 3,338 | 3,459
Financial Asset, Not Past Due [Member] | Commercial Business Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 310,121 | 253,367
Financial Asset, Not Past Due [Member] | Commercial Business Portfolio Segment [Member] | Commercial And Industrial [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 294,872 | 235,787
Financial Asset, Not Past Due [Member] | Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | $ 15,249 | $ 17,580
[1] | Includes loans less than 90 days past due as applicable.

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